While riding yesterday, I noticed that my cranks were wobbling. I stopped in the nearest bike shop (since I was not in my home town) to see if I could just tighten it up quickly. The tech tried that and found that the bottom bracket was shot: the cups have worn too much.
Thankfully, he didn't charge me anything since he didn't do much. But it's something I could have figured out easily myself, if only I'd noticed the wobble while at home. It felt secure and strong as I commuted on it the prior 3 days, but then I noticed about .5 mm of side-to-side play on Friday. It had unknown mileage: this was the original BB-M730 (loose ball) in my '88 KOM. I'd cleaned and re-greased it just a couple weeks earlier when I had my frame re-finished. I really like the crank; it's 48-38-28 Biopace. It just feels right, and I ride so fast and easy on that bike. One issue: the original spindle is 124.5 mm. The closest replacement I could find was a 124 mm from VO. When I install it, the non-drive side will now be .5 mm closer to the frame, correct? I don't think it's worth worrying about. -Tim On Sat, Mar 14, 2015 at 2:17 PM, dougP <[email protected]> wrote: > Not a major project but one that was much easier done at home on my > schedule rather than a mid-tour breakdown. > > Bottom brackets are pretty easy to forget about, but it's easy to slip the > chain off the inner ring & turn them by hand. Spring is a good time, and > at-home is a good place. My thought for the day. > > dougP > > -- > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
